SPONGES OF THE PACMC, I. GEODIDAE. 



PLATE 10. 



Fig. 1 — 15 Sidonops bicolor n. sp. 



1 from station 2958; 2, 6, U, 15 from station 3168; 3,8, 11 from station 2781; 4, 7 from station 4i20 ; 5, 9, 10. 12, 13 from station 4551. 



Lendenfeld pliotograplied. 



Phototype by Charles Bellniann, Prague. 



